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Soil Moisture Active/Passive (SMAP) L-Band Microwave Radiometer Post-Launch Calibration UpgradeCurrent performance and existing problems in SMAP radiometer L1B_TB version 3 data product are described. The post-launch calibration algorithm has been updated by calibrating the three calibration parameters (the equivalent noise temperature of the noise diode, the offset of the reference load, and the antenna gain) jointly by using the global ocean and CS with both 110o and 180o pitch maneuvers after the reflector emissivity is calibrated. The results show that both calibration drift during eclipse season and bias over CS are removed. The RMSDs of the calibration drift over both the global ocean and CS are less than 0.1 K, and the goals of the calibration algorithm upgrade are achieved for coming L1B_TB version 4 data release.
Document ID
20180003547
Acquisition Source
Goddard Space Flight Center
Document Type
Presentation
Authors
Peng, Jinzheng (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Piepmeier, Jeffrey R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Dinnat, Emmanuel P. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Le Vine, David M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bindlish, Rajat (NASA Goddard Space Flight Center Greenbelt, MD, United States)
De Amici, Giovanni (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mohammed, Priscilla N. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hong, Liang (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hudson, Derek (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Misra, Sidharth (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Yueh, Simon H. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Shelton, Kacie E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Freedman, Adam P. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Dunbar, Scott (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Chan, Steven K. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Meissner, Thomas (Remote Sensing Systems, Inc. Santa Rosa, CA, United States)
Jackson, Thomas (Agricultural Research Service Hydrology and Remote Sensing Lab. Beltsville, MD, United States)
Date Acquired
June 13, 2018
Publication Date
March 27, 2018
Subject Category
Geosciences (General)
Report/Patent Number
GSFC-E-DAA-TN53661
Meeting Information
Meeting: Microwave Radiometry and Remote Sensing of the Environment (MicroRad 2018)
Location: Cambridge, MA
Country: United States
Start Date: March 27, 2018
End Date: March 30, 2018
Sponsors: Institute of Electrical and Electronics Engineers
Funding Number(s)
CONTRACT_GRANT: NNG11HP16A
CONTRACT_GRANT: NNX14AI61G
Distribution Limits
Public
Copyright
Use by or on behalf of the US Gov. Permitted.
Keywords
Validation
microwave radiometer
Earth Resources and Remote Sensing
calibration
SMAP

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